// ANIMAÇAO HEADER

var scrollSpeed = 100;
var step = 1;
var current = 0;
var imageWidth = 1090;
var headerWidth = $("#nuvens").height(); 

var restartPosition = -(imageWidth - headerWidth);

function scrollBg(){
	current -= step;
	if (current == restartPosition){
		current = 0;
	}
	
	$('#nuvens').css("background-position", "center "+current+"px");
}

var init = setInterval("scrollBg()", scrollSpeed);